Irin alagbara, irin alagbara, irin jẹ iru didun chromium alagbara chromium ni iwọn otutu Marnunsitic ni iwọn otutu ti ko ni atunṣe, ti awọn ohun-ini rẹ le ṣatunṣe nipasẹ itọju ooru (idaamu ooru (idaamu). Ni gbogbogbo, o jẹ iru kan ti irin alagbara, irin. Lẹhin idaamu, iru-igi ati ilana ijte, lile ti irin 440 irin ti ni ilọsiwaju pupọ ju ti awọn irin-ajo miiran ati ooru storon. O nlo ni iṣelọpọ pupọ ni iṣelọpọ, gige awọn irinṣẹ, tabi awọn molds ṣiṣu ti o nilo awọn ẹru ati wọ igbẹkẹle labẹ awọn ipo corsosive. Stewate Ilu Amẹrika 440 Series, irin pẹlu: 440B, 440B, 440c, 440F. Awọn akoonu eroro ti 440A, 440B ati 440c pọ si aṣeyọri. 440F (ASTM A582) jẹ iru irin gige gige ọfẹ pẹlu akoonu SM ti a ṣafikun lori ipilẹ 440c.
Awọn gita deede ti 440 SS
| Ara ilu Amẹrika | ASTM | 440a | 440b | 440C | 440F |
| Aini | S44002 | S44003 | S44004 | S44020 | |
| Japanese | Jis | Sus 440A | Sus 440b | Sus 440c | Sus 440f |
| Jẹmánì | Di Di | 1.4109 | 1.4122 | 1.4125 | / |
| Ṣaina | GB | 7C17 | 8 gbon17 | 11G17 9r18MO | Y11cccc17 |
Tiwqn kemikali ti 440 SS
| Onipò | C | Si | Mn | P | S | Cr | Mo | Cu | Ni |
| 440a | 0.6-0.75 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440b | 0.75-0.95 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440C | 0.95-1.2 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440F | 0.95-1.2 | ≤1.00 | ≤1.25 | ≤0.06 | ≥0.15 | 16.0-18.0 | / | (≤0.6) | (≤0.5) |
AKIYESI: Awọn iye ninu awọn biraketi ni a gba laaye ati kii ṣe dandan.
Lile ti 440 SS
| Onipò | Hardnesl, Angening (HB) | Itọju ooru (hrc) |
| 440a | ≤255 | ≥54 |
| 440b | ≤255 | ≥56 |
| 440C | ≤269 | ≥58 |
| 440F | ≤269 | ≥58 |
Iru si irin alloy alloy arinrin, irin Saky Marnntentate alagbara, irin ni o ni awọn ohun-ini pupọ, ati pe o le gba ọpọlọpọ awọn ohun-ini ẹrọ nipasẹ itọju ooru oriṣiriṣi. Ni gbogbogbo, 440A ni iṣẹ lile lile ati lile lile, ati alakikanju rẹ ga ju ti 440B ati 440C lọ. 440B ni lile lile ati alakikanju ju 440A ati 440c fun Awọn irinṣẹ gige, iwọn awọn irinṣẹ, awọn irin ati awọn falifu. Awọn 440c ni lile lile ti o ga julọ ti gbogbo irin alagbara, irin ati ooru sooro irin fun awọn irinṣẹ gige didara to gaju, awọn nozzles. 440F jẹ irin ti o ge-ọfẹ ati ti a lo nipataki ni awọn ipọnju aladani.
Akoko Post: Jul-07-2020